Mercer County
County record. Includes every city and agency within Mercer County.
Technology presence
What these categories mean
- ALPR
- Automated license plate readers (ALPR): camera systems that automatically capture, read, and log vehicle license plates with location and time, producing a searchable record of vehicle movements.
- Fixed cameras & RTCC
- Agency-operated fixed video cameras and the real-time crime centers (RTCC) that aggregate live and recorded feeds for monitoring. Extends the Electronic Frontier Foundation's Atlas, which enumerates real-time crime centers and camera registries but not standalone fixed-camera estates.
- Face recognition
- Software that matches faces in images or video against a reference database to identify or verify individuals.
- Drones / UAS
- Uncrewed aerial systems (UAS), commonly called drones, operated by an agency for overhead observation, imaging, or sensing.
- Gunshot detection
- Networks of acoustic sensors that detect and locate suspected gunfire and alert an agency.
- Body-worn & dashcam
- Officer body-worn and in-vehicle dashboard cameras that record encounters; public access to the footage is frequently restricted.
- Doorbell & camera registry
- Programs that give an agency access to privately owned camera footage: doorbell-camera partnerships, citizen camera registries, and private-camera integration platforms.
- Cell-site simulators
- Devices that mimic cell towers to locate or identify nearby mobile phones. They are often called Stingrays, or IMSI catchers after the international mobile subscriber identity (IMSI) number that identifies each phone on a network. Adjacent: communications surveillance outside the visual/sensor core.
- Predictive policing
- Software that forecasts where crime may occur or who may be involved, to direct policing. Adjacent: analytics rather than a sensing deployment.
- Social-media monitoring
- Tools that collect and analyze public social-media activity for an agency. Adjacent: open-source/communications monitoring outside the visual/sensor core.
The record, by agency
Mercer County Sheriff’s Office
The Mercer County Sheriff’s Office has an automated license plate reader program, according to an audit released in July 2025 by the New Jersey State Police.
Sources (via the EFF Atlas): New Jersey State Police
Princeton Police Department
The Princeton Police Department has an automated license plate reader program, according to an audit released in July 2025 by the New Jersey State Police.
Sources (via the EFF Atlas): New Jersey State Police
The Princeton Police Department has four body-worn cameras, according to a 2020 survey from New Jersey Attorney General's Office.
Sources (via the EFF Atlas): New Jersey Attorney General's OfficeNew Jersey Attorney GeneralNew Jersey Attorney General
The Princeton Police Department maintains a voluntary registry of private and personal surveillance cameras.
Sources (via the EFF Atlas): Municipality of Princeton
Trenton Police Department
The Trenton Police Department has an automated license plate reader program, according to an audit released in July 2025 by the New Jersey State Police.
Sources (via the EFF Atlas): New Jersey State Police
The Trenton Police Department has 200 body-worn cameras, according to a 2020 survey from New Jersey Attorney General's Office.
Sources (via the EFF Atlas): New Jersey Attorney General's Office
The Trenton Police Department began using ShotSpotter gunshot detection technology in 2009.
Sources (via the EFF Atlas): New Jersey State Website
Hamilton Township Police Department
The Hamilton Township Police Department - Mercer County has an automated license plate reader program, according to an audit released in July 2025 by the New Jersey State Police.
Sources (via the EFF Atlas): New Jersey State Police
The Hamilton Township Police Department has 40 body-worn cameras, according to a 2020 survey from New Jersey Attorney General's Office.
Sources (via the EFF Atlas): New Jersey Attorney General's OfficeTownship of HamiltonNJ.com
Hightstown Police Department
The Hightstown Police Department has an automated license plate reader program, according to an audit released in July 2025 by the New Jersey State Police.
Sources (via the EFF Atlas): New Jersey State Police
The Hightstown Police Department has 16 body-worn cameras, according to a 2020 survey from New Jersey Attorney General's Office.
Sources (via the EFF Atlas): New Jersey Attorney General's OfficeNew Jersey Attorney GeneralNew Jersey Attorney General
Hopewell Township Police Department
The Hopewell Township Police Department has an automated license plate reader program, according to an audit released in July 2025 by the New Jersey State Police.
Sources (via the EFF Atlas): New Jersey State Police
The Hopewell Police Department has 28 body-worn cameras, according to a 2020 survey from New Jersey Attorney General's Office.
Sources (via the EFF Atlas): New Jersey Attorney General's OfficeNew Jersey Attorney GeneralNew Jersey Attorney General
Robbinsville Township Police Department
The Robbinsville Township Police Department has an automated license plate reader program, according to an audit released in July 2025 by the New Jersey State Police.
Sources (via the EFF Atlas): New Jersey State Police
The Robbinsville Police Department has 40 body-worn cameras, according to a 2020 survey from New Jersey Attorney General's Office.
Sources (via the EFF Atlas): New Jersey Attorney General's OfficeNew Jersey Attorney GeneralNew Jersey Attorney General
Ewing Township Police Department
The Ewing Township Police Department has an automated license plate reader program, according to an audit released in July 2025 by the New Jersey State Police.
Sources (via the EFF Atlas): New Jersey State Police
New Jersey Department of Corrections
The New Jersey Department of Corrections has an automated license plate reader program, according to an audit released in July 2025 by the New Jersey State Police.
Sources (via the EFF Atlas): New Jersey State Police
New Jersey Division of Criminal Justice
The New Jersey Division of Criminal Justice has an automated license plate reader program, according to an audit released in July 2025 by the New Jersey State Police.
Sources (via the EFF Atlas): New Jersey State Police
New Jersey Office of Homeland Security and Preparedness
The New Jersey Office of Homeland Security and Preparedness has an automated license plate reader program, according to an audit released in July 2025 by the New Jersey State Police.
Sources (via the EFF Atlas): New Jersey State Police
Pennington Boro Police Department
The Pennington Boro Police Department has an automated license plate reader program, according to an audit released in July 2025 by the New Jersey State Police.
Sources (via the EFF Atlas): New Jersey State Police
Princeton University Police Department
The Princeton University Police Department has an automated license plate reader program, according to an audit released in July 2025 by the New Jersey State Police.
Sources (via the EFF Atlas): New Jersey State Police
New Jersey Motor Vehicle Commission
New Jersey’s Motor Vehicle Commission responds to face recognition requests from courts or law enforcement agencies, including federal agencies and local and state police, and shares access to its photo database with the New York State Department of Motor Vehicles as part of its Interstate Fraud Prevention Initiative to prevent fraud in the Commercial Driver’s License issuing process.
Sources (via the EFF Atlas): Electronic Frontier FoundationNew Jersey Motor Vehicle Commission
Mercer County Prosecutor’s Office
The Mercer County Prosecutor’s Office received a $396,000 grant from the New Jersey Attorney General's Office in 2023 for automated license plate readers.
Sources (via the EFF Atlas): New Jersey Attorney General's Office
New Jersey State Police
In 2022, the New Jersey State Police received a $10-million state grant to install automated license plate readers on roadways throughout the state. The next year, NJSP received a $3,014,329 grant from the New Jersey Attorney General's Office for its ALPR program.
Sources (via the EFF Atlas): New Jersey Attorney General's OfficeMid Jersey news
The New Jersey State Police has a real time crime center and fusion center
Sources (via the EFF Atlas): New Jersey State Police's Facebook page
The New Jersey State Police uses SoundThinking's Shotspotter gunshot detection system.
Sources (via the EFF Atlas): New Jersey State Police's Facebook page
The New Jersey State police has 1540 body-worn cameras, according to a 2020 survey from New Jersey Attorney General's Office.
Sources (via the EFF Atlas): New Jersey Attorney General's OfficeWHYY
The New Jersey State Police uses Vigilant Solutions' FaceSearch face recognition software.
Sources (via the EFF Atlas): Global Justice Information Sharing Initiative
Lawrence Township Police Department
The Lawrence Township Police Department has been using drones since 2020.
Sources (via the EFF Atlas): Lawrence Township Police DepartmentLawrence Police Department Facebook
Mercer County Prosecutor's Office
The Mercer County Prosecutor's Office received $81,520 in 2021 from the New Jersey Attorney General's Office to purchase 40 body-worn cameras.
Sources (via the EFF Atlas): WRNJNew Jersey Office of the Attorney General
Mercer County Sheriff's Office
The Mercer County Sheriff's Office received $226,218 in 2021 from the New Jersey Attorney General's Office to purchase 111 body-worn cameras.
Sources (via the EFF Atlas): WRNJNew Jersey Office of the Attorney General
New Jersey Department of Law and Public Safety
The New Jersey Department of Law and Public Safety received $142,660 in 2021 from the New Jersey Attorney General's Office to purhase 70 body-worn cameras.
Sources (via the EFF Atlas): WRNJNew Jersey Office of the Attorney General
New Jersey Department of Treasury
The New Jersey Department of Treasury received $61,140 in 2021 from the New Jersey Attorney General's Office to purchase 30 body-worn cameras.
Sources (via the EFF Atlas): WRNJNew Jersey Office of the Attorney General
New Jersey Division of Fish & Wildlife
The New Jersey Division of Fish & Wildlife received $116,166 in 2021 from the New Jersey Attorney General's Office to purchase 57 body-worn cameras.
Sources (via the EFF Atlas): WRNJNew Jersey Office of the Attorney General
New Jersey State Human Services Police
The New Jersey State Human Services Police received $203,800 in 2021 from the New Jersey Attorney General's Office to purchase 100 body-worn cameras.
Sources (via the EFF Atlas): WRNJNew Jersey Office of the Attorney General
New Jersey State Park Police
The New Jersey State Park Police received $189,534 in 2021 from the New Jersey Attorney General's Office to purchase 93 body-worn cameras.
Sources (via the EFF Atlas): WRNJNew Jersey Office of the Attorney General
New Jersey State Parole Board
The New Jersey State Parole Board received $937,480 in 2021 from the New Jersey Attorney General's Office to purchase 460 body-worn cameras.
Sources (via the EFF Atlas): WRNJNew Jersey Office of the Attorney General
West Windsor Township Police Department
The West Windsor Township Police Department received $195,648 in 2021 from the New Jersey Attorney General's Office to purchase 96 body-worn cameras.
Sources (via the EFF Atlas): WRNJNew Jersey Office of the Attorney General
East Windsor Police Department
The East Windsor Police Department has 30 body-worn cameras, according to a 2020 survey from New Jersey Attorney General's Office.
Sources (via the EFF Atlas): New Jersey Attorney General's OfficeNew Jersey Attorney GeneralNew Jersey Attorney General
Ewing Police Department
The Ewing Police Department has 61 body-worn cameras, according to a 2020 survey from New Jersey Attorney General's Office.
Sources (via the EFF Atlas): New Jersey Attorney General's OfficeNew Jersey Attorney GeneralNew Jersey Attorney General
Lawrence Police Department
The Lawrence Police Department received a 2018 Bureau of Justice Assistance of $112,835 to purchase body-worn cameras and received another $43,910 in 2021 and $249,890.00 in FY23 from the State of Massachusetts.
Sources (via the EFF Atlas): New Jersey Attorney General's OfficeNew Jersey Attorney GeneralNew Jersey Attorney General
Pennington Police Department
The Pennington Police Department has five body-worn cameras, according to a 2020 survey from New Jersey Attorney General's Office.
Sources (via the EFF Atlas): New Jersey Attorney General's OfficeNew Jersey Attorney GeneralNew Jersey Attorney General
The College of New Jersey Police Department
The The College of New Jersey Police Department has 20 body-worn cameras, according to a 2020 survey from New Jersey Attorney General's Office.
Sources (via the EFF Atlas): New Jersey Attorney General's OfficeU.S Department of Justice
West Windsor Police Department
The West Windsor Police Department operates six DJI drones as of 2019, according to data compiled by the Center for the Study of the Drone at Bard College.
Sources (via the EFF Atlas): Center for the Study of the Drone at Bard Collegecommunitynews.org
Source: EFF Atlas of Surveillance (Electronic Frontier Foundation & University of Nevada, Reno — Reynolds School of Journalism) · CC BY 4.0 · retrieved July 2026